Something that can get in the way of doing what’s right, what needs to be done or it can make a person spend excessive energy on worrying about what doesn’t need that much attention or care; often intertwined with ones ego & pride.

don't remove that tag from the bed! you don't understand! it's the Principles of it all that matters!

A main character in a piece of performing art. Examples include: In opera, any singer with a primary part; in ballet, a soloist or pair of soloists.
They are usually overpaid when compared to the exceeding amount of work put in by the chorus of an opera. Sure theyve got talent since they are singing in a freaking opera by themselves, but that is their job. Chorus members usually have other jobs outside of the opera.
There is also undue credit in many circumstances. A member of a chorus was once selected for a principle part. Suddenly she thought she was hot shit because she said 2 lines of libretto alone. She got a photo in the Playbill and a short bio. The rest of the choristers got their name in once and 100 dollar check at the end of the show.

"Hmm. Your B flat was a little TOO flat Id say, you should practice more."
MY INWARD RESPONSE---
"You know what Gloria, Ive waited a month to tell you this, but your shit doesnt stink any less than mine. You couldnt hit a B flat even if you were lipsynching you turkey-necked fatball. You need to be a fucking team player because the rest of the chorus applauds for all the principles at curtain call, even you. BITCH"
MY REAL RESPONSE---
"Yea Im still working on that"

The head person in a school environment. Usually feared by students of the K-5th grade. Somewhat respected by students of the 6th-9th grade. Respected only by students from the 10th-12th grade who think the Principle is "cool". Never respected by alumni who are "gangsters" or those who think they are.